Yahoo! Pipes is a powerful composition tool to aggregate, manipulate, and mashup content from around the web. FeedMingle is a new alternative of Pipes, makes lives simpler for web designers and developers, feed readers, bloggers that is able to merge two or more valuable RSS/Atom feeds into a single one. It mixes all the feeds provided and creates one RSS feed, Atom feed, JSON feed, and a html widget to simply paste into your website or blog. Additionally, you can use this web application to mix different Twitter posts or more twitter posts, blog posts or any feeds and publish the mixed posts to another twitter account. You simply add the feed URLs one each line by pasting them and then choose a title for the new merged feed. FeedMingle can also auto-detect feeds for your site. Just give a try first as you don’t need to create an account beforehand and this great service is free for charge as well.

• http://feedmingle.com/